From April 23 to 24, the Chinese Society of Automotive Engineers held the 7th International Automotive Transmission and Drive Technology Symposium in Shanghai.
At this symposium, many entrepreneurs and experts from the automotive industry at home and abroad discussed in-depth the impact of energy conservation and environmental protection on the development of automotive transmissions and drive technologies, and reached a consensus that energy saving and environmental protection is stimulating the potential of automotive transmission and drive technology.
  
Facing fuel consumption standards challenge
For auto companies, China's fourth stage fuel consumption standard is a very serious challenge. Therefore, the latest engine and transmission technologies and precise integration and calibration methods must be applied to vehicle development. For automotive transmissions and drive technology, David Bamett, Calibration and Applications Manager, Gifford Power Technology (China) Co., Ltd. faces this challenge and proposes a practical vehicle fuel consumption reduction plan.
DavidBamett pointed out: "A miniaturized turbocharged engine with an automatic start-stop system integrated with a seven-speed dry dual clutch automatic transmission or an eight-speed automatic transmission will be the best solution to meet the fuel consumption target for 2020. Plug-in hybrid The fuel consumption must be less than 2.8L/100km or the electric vehicle mileage can exceed 50km. At the same time, the automatic transmission should use neutral idle control."
Compared to a conventional manual transmission, a continuously variable automatic transmission (CVT) can reduce fuel consumption and carbon dioxide emissions by 7% without any power loss. “Traditional internal combustion engines still have an absolute advantage and will develop towards a high degree of electrification. CVT is opening a new era of low cost, low noise and low fuel consumption.†Gert-Janvanspijk, Director of Engineering at Bosch Transmission Technology GmbH, highlighted the electrification of Bosch , NVH (noise, vibration and vibration roughness) and cost three aspects to improve the CVT situation.
Gert-Janvanspijk's estimation of China's future CVT output is: 3 million units in 2018 and 3.2 million units in 2021. He said: "With the motor load adjustment, the CVT can achieve optimal engine efficiency with simple control. The electric drive is a quiet drive, and the CVT is suitable for strong mixing and micro-mixing systems. Understanding the speed-level noise at the transmission is the key to improving NVH performance. The optimized thrust unit steel ring group can reduce the vibration by 70%. Compared with other transmissions, the cost of CVT is lower."
Development strives for functional optimization
This symposium exudes information on the development of automotive transmission and drive technology in the era of functional development. Its assembly and its parts and components are all developed to optimize functions. This is also the inevitable trend of energy conservation and environmental protection in-depth development. World Crown Technology Co., Ltd. specializes in the virtual integration of system simulation applications, systems and control development, and provides professional engineering and technical consulting services and advanced software tools to meet the requirements of Chinese customers. Its technical director, Bei Xiaoshi, introduced: "We carry out joint simulation of vehicle and driver behavior in virtual driving tests to support the development of automotive transmissions."
He Huaqiang, expert of the Advanced Technology Development Department of Dongfeng Commercial Vehicle Technology Center, further pointed out: “The hybrid vehicle has added controllers for vehicle controllers, battery management systems, motor controllers, and engine management systems. Complex control systems have been added for virtual integration. Development platform needs."
HOERBIGER Drive Technology Holding Co., Ltd. (Germany) focuses on the strength, wear resistance, and high quality consistency of products, meets all customer needs, and provides tailor-made services. “In the international synchronizer industry, our company is at the top.†OttmarBack, director of product management, is very proud.
Dr. Hans Seeford, a senior expert at Wurz Powertrain in Würzburg, Germany, pointed out in the report entitled "The challenge of mass production of automotive power inverter systems in the development and industrialization": "The knowledge of the entire system for individual parts The optimization is very important, it can help customers start production and cost-optimized electric drive system production on time."
Erik Schneider, manager of the transmission and hybrid hardware development department in Germany, believes that effective drive and cooling systems can reduce CO2 emissions with emission reductions of more than 5 g/km; optimizing driving strategies can further increase economy; simulations in the early stages of development of new transmissions Can help choose the most suitable drive system.
Huang Junfeng, an expert from Schaeffler's automotive division, believes that the past development direction of automotive clutches is ride comfort and reliability, and the future direction of development is to reduce fuel consumption.
Technological and structural innovation highlights
Automotive transmission and drive technology are directly related to energy conservation and environmental protection. There is no end to energy saving and environmental protection, and innovation in automotive transmission and drive technology has not stopped. It is energy saving and environmental protection that has led to innovations in automotive transmission and drive technology, and has even led to structural innovations in automotive transmissions and drive systems and their components.
The essential difference between a CVT and a step-variable transmission is whether a clutch is required for the engagement and disengagement operation. "The current CVT controller already has a step shift mode. The new CVT and the engine are jointly controlled and directly link the driver's intentions to the vehicle's condition. In reality, with the help of the latest D." - STEP shift control, CVT provides a powerful and smooth acceleration whilst maintaining good fuel economy.†“Development of multi-point heat flux measurement technology to determine the heat flux distribution of transmissions. Cooling with wind tunnel installations The development of VRS experimental benches can be used to evaluate the cooling performance under vehicle driving conditions.Using the above two techniques, the heat flux distribution of the hybrid transmission can be analyzed to determine the location of the heat sink cooling effect. With technology, cooling efficiency can be improved.†Gatok Keisuke, representative of Japan Gutco Co., Ltd., explained the need for the lighter weight and better cooling performance of hybrid transmissions.
China's automobile transmission industry is facing many challenges such as transmission technology upgrades, control technology development, integration with vehicle systems, and development efficiency. There is great potential for energy conservation and environmental protection. With the continuous promotion of energy conservation and environmental protection, the highlights of China's automotive transmission and drive technology innovation will inevitably increase.
we produce high-quality sublimation paper, which are exported to China and overseas markets for its bright colors and excellent high transferability.
Our advantage : Competitive price with high quality , high and stable quality of paper , up 95% transfer rate , good printing effect , not easy wrinkle, paper is smooth and spotless.
Sticky Transfer Paper,Hot Transfer Paper,Roll Printing Sublimation Paper,Coating Sublimation Paper
Guangzhou YESUN Digital Technology Limited , https://www.sublimationpaperfactory.com